I filmed this video exploring three modern water treatment options for hiking. You will only live for a few days without water. In the US, even the cleanest streams and lakes are contaminated with protozoa such as Cryptosporidium and Giardia which our eyes can’t see. Untreated water can make you very sick. There are more methods of treating water then I discuss in this video. But, the treatment options discussed are proven, easy to use methods that will help keep you safe from waterborne illness.